If you decide to relume (hands only, dont touch the dial) you might want to choose for a rough kind of paint in the correct colour
If you choose to relume with luminova its going to look like %^#^ and will light up at night where the original lume will have lost its lume capacity
and please take into consideration that hand lume ages differently then dial lume , so a slightly different colour is probably needed

tough choice, I hope you get it right