You could make a solid layer underneath the tick marks/numbers:
TOP LAYER: TICK MARKS/NUMBERS
2ND LAYER: Solid Red layer
Then do a screen capture, and import that into your chosen image editing program. Delete the red/everything but the tic marks/numbers and save as a transparent png.
Not the most ideal solution but it's a quick one if you're going to use them for a lot of watches.
Otherwise, just mask them out like phelanengland says.