Eliminating Color filled cells from the formulas

[UDFNewbie]

Hello All,

I am new to this forum and UDF's (which is what I think I need for the following) so I appreciate the advice:

In the below picture, I am doing several things:

1) Tracking my consumption of different materials (rows 3&4) vs. plan (rows 1&2)
2) Calculating my purchased consumption (cell showing 25% to the right)
3) Forecasting Full year spend in the (GREEN). I am entering values and forecasting my total full year spend. ISSUE: When I forecast the rest of year in green, it updated the cell with the 25%

QUESTION:
1) Is there a way to have the cell with the formula for 25% calculated only those cells that are not colored green? (NOTE: The 25% is driven really just by the row titled "fixed volume").
2) This same 5 rows below are repeated many times for other materials. Will the solution for #1 need to be done on each "25%" formula on each tab of the workbook?

Thanks in advance for the communities help!

UDFNewbie

 

[UDFNewbie]

Thanks all. I still can't seem to figure it out. I'm note sure what to do at this point but I want to say Thanks for all the prompt replies of support!