Touch RPN for Android: Color editor

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Color Editor

Since the version 7.0, the app allows to change all colors of the calculator interface. The color editor may be reached through a button in Settings pane, or by long pressing the left side of the LCD.

Figure 1: Open the color editor by long-pressing the left side of the LCD

Figure 2: Color editor: main pane

In the main pane, you can select a flavor if you want to change the colors of that particular flavor; or select "All flavors" to change the colors for everyone at once.

In the secondary pane, you'll find the list of all interface colors, with descriptive icons.

Figure 3: Secondary color editor pane for `All Flavors`.

The color list is different in the pane "All flavors", since some color points have two variants ("golden" and "silver").

Figure 4: Secondary color editor pane for `Financial` flavor.

Touch the color sample of some item to open the color picker.

Figure 5: Color picker opened by touching a color sample in the color list.

The color picker allows to choose the tone either in terms of RGB color space or HSV (Hue-Saturation-Value). Moving a slider at one group will adjust the other group.

Resetting to default colors

Colors can be restored to their defaults in three levels:

a) To restore one particular color, touch the "Reset" button left of the color sample. This button only shows up for non-default colors.

Figure 6: Secondary color editor pane, with non-default colors showing the Reset button.

b) To reset a flavor, select it on the main pane, then go to the bottom of the color list and touch "Reset to defaults".

Figure 7: Secondary color editor pane, bottom of the color list.

c) To reset all colors, go to the main pane and touch "Reset everything to defaults", at the bottom of the list.

Figure 8: Main color editor pane, bottom of the list.

The colors in the "All Flavors" pane cascade down to the flavors, and become the default colors for them. So, there are two places where you can tweak colors, and you may need to reset the color in both places to go back to the app's default.

Figure 9: The LCD background color is clearly not the app`s default, it cascaded down from the `All Flavors` pane.

Figure 10: Here is the origin of the red color for the LCD background. This is the point where it can be reset.

Color correction

Since every device has a slightly different screen tone (which varies with age) and color gamut, it is not guaranteed that a given color choice will look the same across devices.

Even within the same device, if you save a color with e.g. a given RGB or HSV code, the code may be slightly different when you go back to the color picker for the same item. This happens because the color must be translated across different color spaces, and the translation is not always lossless.