12.3b: rulers, the grid and guides on the canvas, guide drags (Compositor 1.1.7)

src/Document/Guides+Session.h

@@ -1,5 +1,7 @@
 // Swift's Guides extension, and the View menu's guide state.
 public:
+    // Cyan, Photoshop's default guide colour.
+    static inline const QColor guideColor = QColor::fromRgbF(0, 1, 1, 0.9f);
     static constexpr double guideHitDistance = 5;
     bool showsGrid() const { return m_showsGrid; }
     void setShowsGrid(bool shows);