A pop-up, 16-bit color palette used as part of a PaintBoxMorph.
currentColor
currentColor:
Force me to select the given color.
drawOn:
Image plus circles for currently selected color.
ringColor
Choose a color that contrasts with my current color. If that color isn't redish, return red. Otherwise, return green
endColorSelection:
Update current color and report it to paint box.
initMouseHandlers
selectColor:
Update the receiver from the given event. Constrain locOfCurrent's center to lie within the color selection area. If it is partially in the transparent area, snap it entirely into it vertically.
startColorSelection:
Start color selection. Make me stay up as long as the mouse is down.
beStatic
an aid for Nebraska: make the color chart a static image to reduce traffic
initialize
