ImGui color picker

ofxColorManager.cpp

static ImVec4 color;
            color.x = color_backGround.get().r;
            color.y = color_backGround.get().g;
            color.z = color_backGround.get().b;
            color.w = color_backGround.get().a;

            // squared box
            ImGuiColorEditFlags colorEdiFlags =
                    ImGuiColorEditFlags_NoSmallPreview |
                            ImGuiColorEditFlags_NoTooltip |
                            ImGuiColorEditFlags_NoLabel |
                            ImGuiColorEditFlags_NoSidePreview |
                            ImGuiColorEditFlags_NoInputs |
                            ImGuiColorEditFlags_NoAlpha |
                            ImGuiColorEditFlags_PickerHueBar;

            ImGui::ColorPicker4("Background Color", (float *) &color, colorEdiFlags);
//            ImGui::ColorPicker4("Background Color", color_backGround.get(), colorEdiFlags);

            color_backGround = color;