This is a project where you can use RGB values to set the pen color, and check if the pen is touching a color. Make sure you're running it in turbo mode, and click "See Inside" for the two blocks you need to use. Please note that for some odd reason, scratch doesn't exactly compare RGB values. I have found that a modification of a value of ~20 will get scratch to realize if it's touching this color or not. This project is not "user friendly", it's more just of a test play ground.
Credits to some guy since I stole the "IntToHex" from him. <b>I DO NOT REMEMBER HIS NAME!</b> However, I believe his name started with "ht" and maybe had something like "htime" or "htme". I'm dearfully sorry! ~-< TURBO MODE REQUIRED >-~ [GREEN FLAG] -> Fill the screen with RGB 0, 255, 0 [A] -> Print out a RGB color chart, increments blue by 1 and once blue becomse 255, resets blue, and changes green by one, and when green is 255, it will reset blue and green and change red by one, and the cycle will end when red is 255. [B] -> Increment red green and blue by 1 untill they all get to 255. This will produce a shading effect of which looks like black to white. [A + B] -> Will turn the red pixel up to 255 so you get a nice horizon thing.