Barely distinguishable checked and unchecked boxes in Kvantum

Created by: faustocintra

Dear Vince,

I appreciate very much your work on Qogir, as I use the themes on a daily basis.

However, checkboxes in Kvantum seems to me to have a bare distingushable appearance, the check mark being way too faint.

(The image attached above appears zoomed in, please download it to see its actual size.)

Is thera a way to improve that? Thanks in advance.