Well, it can result in two results:
the hex (#FFF000)
numbers

Numbers

((blue) + (((green) * (256)) + ((red) * (65536))))

these shades are from RGB

and you may know hex

The new block would look like this:

(eyedropped color [number v] in x: (-240) y: (179) ::looks)

The result:

if <(the whole stage) = [black]> then 
result is (0)
else
result is something else
end

They will work like the block touching color and the color scanning script, but even with no screen refresh. Just the whole time should be 0.0000000 milliseconds or even less to scan

that sounds complex

secondimension wrote:

that sounds complex

It's just your thinking. You can recreate this with this script:

define Detect color from x: (x) y: (y)
switch costume to (BIG v)
set size to (1) %
switch costume to (Detector v)
go to x: (x) y: (y)
set [red v] to (0)
repeat (32) {
set [green v] to (0)
repeat (32) {
set [blue v] to (0)
repeat (16) {
set [color v] to (((red) * (65536)) + (((green) * (256)) + (blue)))
if <touching color (color)> then {
stop [this script v]
} ::control
change [blue v] by (16)
} @loopArrow ::control
change [green v] by (8)
} @loopArrow ::control
change [red v] by (8) 
} @loopArrow ::control

For this script, we need two bitmap costumes.
One, called “BIG” is the image filled whole canvas
Second, called “Detector” is the 2x2 image of a brush.
Why two?
It is the trick for Scratch into resizing small costumes even smallers.

Answer to the question you may ask: Why you are suggesting such thing if you can recreate it?
Answer: because I want it even faster (not less than a screen refresh, but less than a nanosecond)