P: Overlay is very hard to see (Crop/Transform)

Thank you.It was my dream since I started to use lightroom for 4 years.

For me the best solution would be to have a choice of colors, even if they are just the primaries plus white and black. Setting line thickness would also be useful. What I find odd is that the crop overlay is thin and faint, but the Loop overlay grid is almost too bright and thick. Having them both the same, with total control of color, line thickness and grid scale would be a big improvement. 

Based on your comments, and my own testing I am going to reopen the issue.  

With GPU off, it is working as expected.
With GPU on (and fresh driver from nVidia today) it is not. Too faint and the Fibonacci spiral is not rendered correctly. Thanks for your feedback.

I just checked mine, GP on and off, I didn't see any change, look ok here; WIN10.

Very odd, just came back to read this, I tried this overlay this am and seem to work ok....now, I can not get the grid overlay, greyed out. Ideas?

Not fixed here too on Windows 10 with 'Use Graphics Processor' checked.

So this is the issue:

With the Graphics Processor Acceleration disabled (turned off) the hor/vert grid is white = excellent; however, the work flow speed will be reduced in this current setting. My request is to have the GPA enabled with the grid in an off white pattern, not the current black. The current LR v7.4 only enlarged the grid pattern. LR needs to create the off white color grid.
  

I see the same issue on Windows 7 with LR Classic 7.4 with 'Use Graphics Processor' checked. This is clearly (pun) not fixed on Windows 7 systems!

The lines are thicker as long as the USE GRAPHICS PROCESSOR is turned OFF. When I turn it ON the lines are faint again — except for the swirl option.