diff --git a/compiler/res/prog8lib/cx16/palette.p8 b/compiler/res/prog8lib/cx16/palette.p8
index 3932db299..f03851baf 100644
--- a/compiler/res/prog8lib/cx16/palette.p8
+++ b/compiler/res/prog8lib/cx16/palette.p8
@@ -44,16 +44,16 @@ palette {
         }
     }
 
-    sub set_monochrome() {
+    sub set_monochrome(uword screencolorRGB, uword drawcolorRGB) {
         vera_palette_ptr = $fa00
-        cx16.vpoke(1, vera_palette_ptr, 0)
+        cx16.vpoke(1, vera_palette_ptr, lsb(screencolorRGB))   ; G,B
         vera_palette_ptr++
-        cx16.vpoke(1, vera_palette_ptr, 0)
+        cx16.vpoke(1, vera_palette_ptr, msb(screencolorRGB))   ; R
         vera_palette_ptr++
         repeat 255 {
-            cx16.vpoke(1, vera_palette_ptr, 255)
+            cx16.vpoke(1, vera_palette_ptr, lsb(drawcolorRGB)) ; G,B
             vera_palette_ptr++
-            cx16.vpoke(1, vera_palette_ptr, 255)
+            cx16.vpoke(1, vera_palette_ptr, msb(drawcolorRGB)) ; R
             vera_palette_ptr++
         }
     }
diff --git a/compiler/res/version.txt b/compiler/res/version.txt
index e0ea36fee..13ea47b9b 100644
--- a/compiler/res/version.txt
+++ b/compiler/res/version.txt
@@ -1 +1 @@
-6.0
+6.1-SNAPSHOT
diff --git a/docs/source/todo.rst b/docs/source/todo.rst
index d326f760e..7f2560641 100644
--- a/docs/source/todo.rst
+++ b/docs/source/todo.rst
@@ -10,7 +10,8 @@ TODO
 - use the 65c02 bit clear/set/test instructions for single-bit operations
 
 - implement highres 4 color mode in gfx2
-- make a retro amiga workbench 1.3 and/or 2.0 workbench "simulator" using that new gfx mode
+- make a retro Amiga Workbench "simulator" using that new gfx mode
+- add a flood fill routine to gfx2
 - can we get rid of the --longOptionName command line options and only keep the short versions? https://github.com/Kotlin/kotlinx-cli/issues/50
 - add a f_seek() routine for the Cx16 that uses its seek dos api?
 - optimizer: detect variables that are written but never read - mark those as unused too and remove them, such as uword unused = memory("unused222", 20) - also remove the memory slab allocation
diff --git a/examples/cx16/amiga.p8 b/examples/cx16/amiga.p8
new file mode 100644
index 000000000..d45e4fddb
--- /dev/null
+++ b/examples/cx16/amiga.p8
@@ -0,0 +1,201 @@
+%import textio
+%import palette
+%import string
+%import gfx2
+
+; Mockup of a classic Amiga Workbench screen.
+
+; TODO make everything 4 colors
+
+main {
+
+    sub start() {
+        palette.set_monochrome($0aaa, $0000)
+        gfx2.screen_mode(128)           ; select 640*480 mode
+        cx16.VERA_DC_VSCALE = 64        ; have the vertical resolution so it is 640*240 - more or less Amiga's default non interlaced mode
+        cx16.mouse_config(1, 1)         ; enable mouse   TODO make it an Amiga mouse pointer if possible
+        gfx2.text_charset(3)
+        gfx2.monochrome_stipple(true)
+        gfx2.fillrect(0,11,gfx2.width,gfx2.height/2-11,1)
+        gfx2.monochrome_stipple(false)
+
+        screen_titlebar()
+        window_workbench()
+        window_system()
+        window_shell()
+        gfx2.text(280, 220, 1, @"Mockup drawn using Prog8 gfx2 library")
+
+        repeat {
+        }
+    }
+
+    sub screen_titlebar() {
+        ; TODO white box
+        gfx2.text(8,1, 1, @"AmigaOS 3.1    2,002,448 graphics mem  16,504,384 other mem")
+        gfx2.horizontal_line(0, 10, gfx2.width, 1)
+        widget.window_order_icon(gfx2.width-22, 0, false)
+    }
+
+
+    sub window_workbench() {
+        const uword win_x = 10
+        const uword win_y = 16
+        const uword width = 600
+        const uword height = 220
+
+        widget.window_titlebar(win_x, win_y, width, @"Workbench", true)
+        gfx2.fillrect(win_x+3, win_y+11, width-4, height-11-2,0)    ; clear window pane
+        widget.window_leftborder(win_x, win_y, height, true)
+        widget.window_bottomborder(win_x, win_y, width, height)
+        widget.window_rightborder(win_x, win_y, width, height, true)
+
+        vector_v(win_x+width - 380, win_y+height-20)
+        vector_v(win_x+width - 380 -14, win_y+height-20)
+
+        widget.icon(45,40, @"Ram Disk")
+        widget.icon(45,90, @"Workbench3.1")
+    }
+
+    sub vector_v(uword x, uword y) {
+        gfx2.horizontal_line(x, y, 12, 1)
+        gfx2.horizontal_line(x+16, y+16, 12,1)
+        gfx2.line(x,y,x+16,y+16,1)
+        gfx2.line(x+11,y,x+16+6,y+10,1)
+        gfx2.line(x+16+6,y+10,x+48,y-16,1)
+        gfx2.line(x+16+11,y+16,x+48+11,y-16,1)
+    }
+
+    sub window_system() {
+        const uword win_x = 360
+        const uword win_y = 40
+        const uword width = 640-360
+        const uword height = 120
+
+        widget.window_titlebar(win_x, win_y, width, @"System", false)
+        gfx2.fillrect(win_x+3, win_y+11, width-4, height-11-2,0)    ; clear window pane
+        widget.window_leftborder(win_x, win_y, height, false)
+        widget.window_bottomborder(win_x, win_y, width, height)
+        widget.window_rightborder(win_x, win_y, width, height, false)
+
+        widget.icon(win_x+16, win_y+14, @"FixFonts")
+        widget.icon(win_x+16+80, win_y+14, @"NoFastMem")
+        widget.icon(win_x+16, win_y+56, @"Format")
+        widget.icon(win_x+16+80, win_y+56, @"RexxMast")
+        widget.icon(win_x+16+160, win_y+56, @"Shell")
+    }
+
+    sub window_shell() {
+        const uword win_x = 64-4
+        const uword win_y = 140
+        const uword width = 500
+        const uword height = 65
+
+        widget.window_titlebar(win_x, win_y, width, @"AmigaShell", false)
+        gfx2.fillrect(win_x+3, win_y+11, width-4, height-11-2,0)    ; clear window pane
+        widget.window_leftborder(win_x, win_y, height, false)
+        widget.window_bottomborder(win_x, win_y, width, height)
+        widget.window_rightborder(win_x, win_y, width, height, false)
+
+        gfx2.text(win_x+5, win_y+12, 1, @"New Shell process 3")
+        gfx2.text(win_x+5, win_y+12+8, 1, @"3.Workbench3.1:>")
+        gfx2.fillrect(win_x+5+17*8, win_y+12+8, 8, 8, 1)        ; cursor
+    }
+}
+
+    ; TODO make "highlightedrect" function (inclusive active /nonactive fill)
+
+
+widget {
+    sub icon(uword x, uword y, uword caption) {
+        const ubyte width = 56
+        const ubyte height = 28
+        gfx2.rect(x,y,width,height,1)
+        uword middlex = x+width/2+1
+        ubyte halfstring = string.length(caption) * 4
+        gfx2.text(middlex-halfstring,y+height+1,1,caption)
+
+        gfx2.monochrome_stipple(true)
+        gfx2.disc(x+width/4+4, y+height/2, height/2-4, 1)
+        gfx2.monochrome_stipple(false)
+        gfx2.circle(x+width/4+4, y+height/2, height/2-4, 1)
+        gfx2.fillrect(x+20,y+12,width/2,height/2-4,1)
+    }
+
+
+    sub window_titlebar(uword x, uword y, uword width, uword titlestr, ubyte active) {
+        const ubyte height = 10
+        gfx2.fillrect(x,y,width,height,0)
+        gfx2.horizontal_line(x, y, width, 1)
+        gfx2.text(x+32, y+1, 1, titlestr)
+        gfx2.horizontal_line(x, y+height, width, 1)
+        widget.window_close_icon(x, y, active)
+        widget.window_order_icon(x+width-22, y, active)
+        widget.window_resize_icon(x+width-43, y, active)
+    }
+
+    sub window_resize_icon(uword x, uword y, ubyte active) {
+        const uword width = 22
+        const uword height = 11
+        gfx2.horizontal_line(x, y, width, 1)
+        gfx2.horizontal_line(x, y+height-1, width, 1)
+        gfx2.vertical_line(x,y,height,1)
+        gfx2.vertical_line(x+1,y,height,1)
+        gfx2.vertical_line(x+width-1,y,height,1)
+
+        gfx2.rect(x+5, y+2, width-9, height-4, 1)
+        gfx2.rect(x+5, y+2, width-15, height-7, 1)
+    }
+
+    sub window_order_icon(uword x, uword y, ubyte active) {
+        ; TODO background filled box
+        const uword width = 22
+        const uword height = 11
+        gfx2.horizontal_line(x, y, width, 1)
+        gfx2.horizontal_line(x, y+height-1, width, 1)
+        gfx2.vertical_line(x,y,height,1)
+        gfx2.vertical_line(x+1,y,height,1)
+        gfx2.vertical_line(x+width-1,y,height,1)
+
+        gfx2.fillrect(x+4, y+2, 10, 5, 1)       ; grey back
+        ; TODO black border
+        gfx2.fillrect(x+8, y+4, 10, 5, 1)       ; white front
+        ; TODO black border
+    }
+
+    sub window_close_icon(uword x, uword y, ubyte active) {
+        ; TODO background filled box
+        const uword width = 20
+        const uword height = 11
+        gfx2.horizontal_line(x, y, width, 1)
+        gfx2.horizontal_line(x, y+height-1, width, 1)
+        gfx2.vertical_line(x,y,height,1)
+        gfx2.vertical_line(x+width-2,y,height,1)
+        gfx2.vertical_line(x+width-1,y,height,1)
+        gfx2.fillrect(x+7, y+3, 5, 5, 1)
+        ; TODO black border
+    }
+
+    sub window_leftborder(uword x, uword y, uword height, ubyte active) {
+        gfx2.vertical_line(x, y, height, 1)
+        gfx2.vertical_line(x+1, y+11, height-11, 1)
+        gfx2.vertical_line(x+2, y+11, height-11, 1)
+    }
+
+    sub window_bottomborder(uword x, uword y, uword width, uword height) {
+        gfx2.horizontal_line(x+3, y+height-2, width-3, 1)
+        gfx2.horizontal_line(x, y+height-1, width, 1)
+    }
+
+    sub window_rightborder(uword x, uword y, uword width, uword height, ubyte active) {
+        ; TODO scrollbar and scroll icons
+        gfx2.vertical_line(x+width-1-16, y+11, height-13,1)
+        gfx2.vertical_line(x+width-1, y+11, height-11,1)
+
+        gfx2.fillrect(x+width-1-15, y+height-10, 15, 9, 0)
+        gfx2.horizontal_line(x+width-1-13, y+height-3, 11,1)
+        gfx2.vertical_line(x+width-1-3, y+height-3-5, 5,1)
+        gfx2.line(x+width-1-13,y+height-3, x+width-1-3, y+height-3-5, 1)
+        gfx2.horizontal_line(x+width-1-16, y+height-10, 16,1)
+
+    }
+}