I've finally finished mixing the blue and am about halfway through processing and painting the arm joints.
I used a sticker to create the yellow part of the Sieg Axe.
For the Giffredon, I cut out the silver from the included sticker and painted it over with clear green to complement the color.
Mixing the blue of the Sieg Axe is difficult, so I bought the Sieg Axe Color 2, but when I checked the runners, the blue was a little too strong, so I adjusted it by adding the blue I mixed previously♪

Blue painting of Siegax finished & Giffredo arms | としくん's Gunpla works