puchfinnland

a new chain and cleaned rear deraileurs does wonders.

some new softer modern bar tape is a great luxury over the old hard stuff

I noticed you have steel handlebars and maybe even a steel seatpost.

I am sure there are some forumites who have these parts in alloy used you can get for next to nothing.

I have at least 6 pairs of cheap bars with no need for them-too bad im so far away.

as for colors-

I have thought of this before, some old bikes were very pleasent with a 2 tone paint,
as you do not have anything worth keeping original take a look around,
sometimes a wide band around the seat tube, or the lugs painted makes a big difference.

good luck