Update.

Akatsuki/beamercolorthemeAkatsuki.sty

@@ -55,18 +55,19 @@
 \colorlet{main1}{color31}
 \colorlet{main2}{color51}
 
-% Colors used in the cours_beamer class
-\colorlet{sectioncolor}{color71}
-\colorlet{subsectioncolor}{color71}
-
 % Colors of the structure, palettes, etc
 \setbeamercolor*{structure}{fg=color51} % itemize, enumerate, etc
-\setbeamercolor*{palette primary}{use=structure,bg=color1,fg=color0}
+\setbeamercolor*{palette primary}{use=structure,fg=color1,bg=color0}
-\setbeamercolor*{palette secondary}{use=structure,bg=color1,fg=color0}
+\setbeamercolor*{palette secondary}{use=structure,fg=color1,bg=color0}
-\setbeamercolor*{palette tertiary}{use=structure,bg=color1,fg=color0}
+\setbeamercolor*{palette tertiary}{use=structure,fg=color1,bg=color0}
-\setbeamercolor*{palette quaternary}{use=structure,bg=color1,fg=color0}
+\setbeamercolor*{palette quaternary}{use=structure,fg=color1,bg=color0}
 
+% Color of the title page frame
 \setbeamercolor*{title page header}{fg=color0}
 
+% Colors of sections and subsections in the cours_beamer class
+\setbeamercolor*{sectioncolor}{fg=color31}
+\setbeamercolor*{subsectioncolor}{fg=color51}
+
 \mode
 <all>

Akatsuki/beamerinnerthemeAkatsuki.sty

@@ -1,18 +1,19 @@
 \mode<presentation>
 
+% Background of frames
 \setbeamertemplate{background}{
   \begin{tikzpicture}
   \useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
-  \fill[color=mypurple1] (0,2) rectangle (\the\paperwidth,\the\paperheight);
+  \fill[color=main2] (0,2) rectangle (\the\paperwidth,\the\paperheight);
-  \fill[color=myred1] (0,0) rectangle(2.95,1.9);
+  \fill[color=main1] (0,0) rectangle(2.95,1.9);
-  \fill[color=mygrey1] (3.05,0) rectangle(\the\paperwidth,1.9);
+  \fill[color=main0] (3.05,0) rectangle(\the\paperwidth,1.9);
   \ifnum\thepage>1\relax%
    \fill[white,opacity=1] (0,0) rectangle(\the\paperwidth,\the\paperheight);
    \fi
   \end{tikzpicture}
 }
 
-% Title page
+% Title page of frames
 \defbeamertemplate*{title page}{Akatsuki}[1][]
 { 
    \vskip6cm%
@@ -30,6 +31,6 @@
   \vfill
 }
 
-% Items
+% Items in frames
-\setbeamertemplate{items}[square]
+\setbeamertemplate{items}[bullets]
-\setbeamertemplate{sections/subsections in toc}[square]
+\setbeamertemplate{sections/subsections in toc}[bullets]

Akatsuki/beamerouterthemeAkatsuki.sty

@@ -6,14 +6,14 @@
 \vskip1cm%
   \begin{beamercolorbox}[wd=\paperwidth,ht=1.2cm]{frametitle} 
   \begin{tikzpicture}
-  \useasboundingbox[fill=mywhite](0,0) rectangle(\the\paperwidth,1.2);
+  \useasboundingbox[fill=white](0,0) rectangle(\the\paperwidth,1.2);
-  \fill[color=mygrey1] (0,0) rectangle(2.95,1.2);
+  \fill[color=main0] (0,0) rectangle(2.95,1.2);
-  \fill[color=mypurple1] (3.05,0) rectangle(\the\paperwidth,1.2);
+  \fill[color=main2] (3.05,0) rectangle(\the\paperwidth,1.2);
    \ifx\insertframesubtitle\@empty%
-      {\node[anchor=west, color=mywhite, font=\large] at (3.2,0.61){\insertframetitle};}
+      {\node[anchor=west, color=white, font=\large] at (3.2,0.61){\insertframetitle};}
       \else%
-      {\node[anchor= west, color=mywhite, font=\large] at (3.2,0.81){\insertframetitle};%
+      {\node[anchor= west, color=white, font=\large] at (3.2,0.81){\insertframetitle};%
-       \node[anchor= west, color=mywhite, font=\small] at (3.2,0.41){\insertframesubtitle};}%
+       \node[anchor= west, color=white, font=\small] at (3.2,0.41){\insertframesubtitle};}%
       \fi
   \end{tikzpicture}
   \end{beamercolorbox}