How to make a non-macro button/checkbox that when clicked will copy value out of that cell

What I have is cell a1, a2, and a3 that all have a different shade of red and each cell has a value set to it:

A1 = 1325
A2 = 1327
A3 = 1329

Cell B1 is blank.

I would like to be able to click on one of the colored cells and copy that value to B1. I cannot use macros.

Help please!

Thanks in advance.