Aimbot help

I have made a aimbot with pixel searth, (It is more a trigger bot).
For the color database: I have made a script that searth for me the collors and put them in a file that I include in my script. I have over 10000 colors.

So my script can easy find the enemy.

But pixel searth takes 300-500ms, so I aim a littel bit to late.
The script takes frome every pixel in a range a "copy" (don't know how I can explain this good in englise)

My idee is to make a screenshot of the area, and I let c++ scan the screenshot for collors.

My question is, how mutch faster will this be?

is this a autoit and aimbotmaker if it is then noob just die