Pen/Marker for Invitations Help

I'm going to handwrite my invitations - but the coloring of the invitations and my address on the back flap of the envelope is very light. (ivory envelope and champagne address). If I use black ink it'll be a huge contrast.

Does anyone have any places or markers/pens they recommend I shop at to buy a marker/pen? I want it to be shimmery and light rose or something like that.

I already looked at Michaels and they only have Sharpie markers, colored pencils or black/red/green/blue calligraphy pens.

Help!! TIA!!

pearl paint on merrick avenue- i think its westbury

they have all color paint and caligraphy type pens

oh thanks! I'm going through their website right now!