Love the game but frustrated – Sudoku: Classic and Variations Review

Suggestion- it would be very helpful,when using the small numbers in the lower left of the screen, if they could be another color like pink or blue or green instead of yellow. It's too close to the white of the background and depending on my location either outside or inside it is hard to see those small yellow circles. If you could change the yellow to almost any other color it would be ever so appreciated.
Review by stcards on Sudoku: Classic and Variations.