- error: invalid operands to binary expression ('std::__1::basic_istream<char>' and 'nullptr_t')
- error: non-constant-expression cannot be narrowed from type 'int' to 'unsigned char' in initializer list

Index: src/readConfig.cpp
--- src/readConfig.cpp.orig
+++ src/readConfig.cpp
@@ -20,6 +20,8 @@ using namespace std;
 static PlanetProperties *defaultProperties;
 static PlanetProperties *currentProperties;
 
+static inline unsigned char i2b( int x ) { return static_cast<unsigned int>(x) & 0xffU; }
+
 static void
 readConfig(const char *line, PlanetProperties *planetProperties[])
 {
@@ -49,7 +51,7 @@ readConfig(const char *line, PlanetProperties *planetP
             int r, g, b;
             if (sscanf(returnString, "%d,%d,%d", &r, &g, &b) == 3)
             {
-                unsigned char color[3] = { r & 0xff, g & 0xff, b & 0xff };
+                unsigned char color[3] = { i2b(r), i2b(g), i2b(b) };
                 currentProperties->ArcColor(color);
             }
             else
@@ -179,7 +181,7 @@ readConfig(const char *line, PlanetProperties *planetP
             int r, g, b;
             if (sscanf(returnString, "%d,%d,%d", &r, &g, &b) == 3)
             {
-                unsigned char color[3] = { r & 0xff, g & 0xff, b & 0xff };
+                unsigned char color[3] = { i2b(r), i2b(g), i2b(b) };
                 currentProperties->Color(color);
             }
             else
@@ -244,7 +246,7 @@ readConfig(const char *line, PlanetProperties *planetP
             int r, g, b;
             if (sscanf(returnString, "%d,%d,%d", &r, &g, &b) == 3)
             {
-                unsigned char color[3] = { r & 0xff, g & 0xff, b & 0xff };
+                unsigned char color[3] = { i2b(r), i2b(g), i2b(b) };
                 currentProperties->GridColor(color);
             }
             else
@@ -296,7 +298,7 @@ readConfig(const char *line, PlanetProperties *planetP
             int r, g, b;
             if (sscanf(returnString, "%d,%d,%d", &r, &g, &b) == 3)
             {
-                unsigned char color[3] = { r & 0xff, g & 0xff, b & 0xff };
+                unsigned char color[3] = { i2b(r), i2b(g), i2b(b) };
                 currentProperties->MarkerColor(color);
             }
             else
@@ -403,7 +405,7 @@ readConfig(const char *line, PlanetProperties *planetP
             int r, g, b;
             if (sscanf(returnString, "%d,%d,%d", &r, &g, &b) == 3)
             {
-                unsigned char color[3] = { r & 0xff, g & 0xff, b & 0xff };
+                unsigned char color[3] = { i2b(r), i2b(g), i2b(b) };
                 currentProperties->OrbitColor(color);
             }
             else
@@ -473,7 +475,7 @@ readConfig(const char *line, PlanetProperties *planetP
             int r, g, b;
             if (sscanf(returnString, "%d,%d,%d", &r, &g, &b) == 3)
             {
-                unsigned char color[3] = { r & 0xff, g & 0xff, b & 0xff };
+                unsigned char color[3] = { i2b(r), i2b(g), i2b(b) };
                 currentProperties->TextColor(color);
             }
             else
@@ -550,7 +552,7 @@ readConfigFile(string configFile, PlanetProperties *pl
 
         ifstream inFile(configFile.c_str());
         char *line = new char[256];
-        while (inFile.getline(line, 256, '\n') != NULL)
+        while (inFile.getline(line, 256, '\n'))
             readConfig(line, planetProperties);
         
         // This condition will only be true if [default] is the only