All the traces will be on the bottom layer as they are on a single sided board, but you will also get a top silkscreen layer with the outline of the parts. If you print the top silkscreen layer, you should be able to print it on something (I admit I don’t know what, but I suspect there is something ) that would let you apply it to the top of the board to simulate silkscreen. I rarely make boards (and use a board house the few times that I do) so I’m likely not much help here. Hopefully someone else will have a solution for printing a silkscreen on a home etched board.
I posted this awhile back - it may help you to change the Colors (it’s a video gif). Here’s the Link.
Then, though I cnc mill my pcb’s and seldom use a Silkscreens, on the occasions when I do, I use the Iron-On approach from Photographic paper. Never did color as my printer is black&white. But, color should also work.
[EDIT] I forgot to look at the vid until after posting here - I forgot to mention I demo’d another useful vid on this but, it’s quicker for me to just red0 one, below.
There are a couple of pauses while I select colors off screen but, keep watching…
Export an Image from the Export option then, you can color what/how you like in most any graphic program…