imm.begin(GL::QUADS);
imm.color(1.0f, 1.0f, 1.0f, max(min(static_cast<float>(activity/10000), 1.0f), 0.2f));
imm.vertex(-5, -5);
imm.begin(GL::QUADS);
imm.color(1.0f, 1.0f, 1.0f, max(min(static_cast<float>(activity/10000), 1.0f), 0.2f));
imm.vertex(-5, -5);