Complex sentence: While visiting a surplus store in Chicago, executive member Jack Fyffe found a set of green and white uniforms and purchased them for the Roughriders, which have remained as the team's primary colours to this day.
Split into simpler sentences: While visiting a surplus store in Chicago, executive member Jack Fyffe found a set of green and white uniforms and purchased them for the Roughriders. Green and white have remained as the team's primary colours to this day.