This marker is blue, da-ba-dee., In all seriousness, it's the blue that closest matches the blue of most main Gundams in the whole Gundam universe.
GM06 Blue Gundam Marker
Gundam Gang] Mr. Hobby Gundam Marker GM04 GM05 GM06 GM07 GM08 GM09 GM10 GM11 GM12 GM13
GM13 Mecha Gray Gundam Marker
ABCbajet Hobby: GSI Creos Gundam Marker List
GM-06 Blue Gundam Marker : Arts, Crafts & Sewing
Gundam Planet - GM06 Blue Gundam Marker
Gundam Marker - GM06 Blue สีน้ำเงิน : Mr.Hobby
Gundam Marker GM-06 Gundam Blue (Angled Flat Edge Tip / Alcohol Based Paint): Kikatek UK
GUNDAM MARKERS MasterGrade Hobbies
GSI Creos Mr.Hobby Gundam Marker, Color: Blue (GM06), Tip: Chisel, You can express the color as configured. You can paint both large and small places
Gundam Marker Blue Line Gundam Bandai
The Blue Gundam Marker is an easy alternative to brush painting. Each Gundam marker has paint inside that are design to go directly on the plastic model. Gundam markers come in various sizes and colors make them perfect for small detailing to paint whole parts. To use the markers, the pen needs to be shaken so that the paint inside is mixed and then pressing down on the marker time several times to allow the paint to flow through the pen nip.
GM06 Blue Gundam Marker
Mr. Hobby Gundam Markers – Clarksville Hobby Depot LLC