Menu draws half-transparent overlay

include/Window.h

     int w;
     int h;
     float scale;
-    unsigned char color[3];
+    unsigned char color[4];
 } WindowString;
 
 /*!

src/Menu.cpp

     mainText.color[0] = 0xFF;
     mainText.color[1] = 0xFF;
     mainText.color[2] = 0xFF;
+    mainText.color[3] = 0xFF;
     mainText.scale = 1.2f;
     mainText.w = 0;
     mainText.h = 0;
     Window *window = gOpenRaider->mWindow;
 
     if (mVisible) {
+        // Draw half-transparent *overlay*
+        glColor4f(0.0f, 0.0f, 0.0f, 0.5f);
+        glDisable(GL_TEXTURE_2D);
+        glRecti(0, 0, window->mWidth, window->mHeight);
+        glEnable(GL_TEXTURE_2D);
+
+        // Draw heading text
         mainText.x = (window->mWidth / 2) - (mainText.w / 2);
         mainText.y = 10;
         window->writeString(&mainText);

src/WindowSDL.cpp

     color.r = s->color[0];
     color.g = s->color[1];
     color.b = s->color[2];
+    color.a = s->color[3];
 
     SDL_Surface *surface = TTF_RenderUTF8_Blended(mFont, s->text, color);
     if (surface == NULL) {
     GLuint xMax = xMin + (int)((float)surface->w * s->scale);
     GLuint yMax = yMin + (int)((float)surface->h * s->scale);
 
+    glColor4f(color.r / 256.0f, color.g / 256.0f, color.b / 256.0f, color.a / 256.0f);
+
     glBegin(GL_QUADS);
         glTexCoord2f(0.0f, 0.0f);
         glVertex2i(xMin, yMin);