When an incorrect number is entered. For example, when 5 is entered when there's already a 5, both are displayed in red. However, it's hard to tell which one is the 5 a user entered and which one is the 5 in the board. Once a few more of these red block shows up, it becomes very confusing.
Would it be better if the user-entered number 5 shows up in red in font color and existing 5 in the board shows up with red as background (perhaps with slightly less-saturated red)?
When an incorrect number is entered. For example, when 5 is entered when there's already a 5, both are displayed in red. However, it's hard to tell which one is the 5 a user entered and which one is the 5 in the board. Once a few more of these red block shows up, it becomes very confusing.
Would it be better if the user-entered number 5 shows up in red in font color and existing 5 in the board shows up with red as background (perhaps with slightly less-saturated red)?